7528738868 has 60 divisors (see below), whose sum is σ = 15566389440. Its totient is φ = 3185438256.

The previous prime is 7528738849. The next prime is 7528738909. The reversal of 7528738868 is 8688378257.

It is a self number, because there is not a number n which added to its sum of digits gives 7528738868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 753755 + ... + 763677.

It is an arithmetic number, because the mean of its divisors is an integer number (259439824).

Almost surely, 2^7528738868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7528738868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7783194720).

7528738868 is an abundant number, since it is smaller than the sum of its proper divisors (8037650572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7528738868 is an equidigital number, since it uses as much as digits as its factorization.

7528738868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10034 (or 10011 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 62.

The square root of 7528738868 is about 86768.3056651448. The cubic root of 7528738868 is about 1959.9308308924.

The spelling of 7528738868 in words is "seven billion, five hundred twenty-eight million, seven hundred thirty-eight thousand, eight hundred sixty-eight".